import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/QueryString")
public class GetQueryString extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType("text/html; charset=utf8");
        String aa = req.getParameter("aa");
        String bb = req.getParameter("bb");
        resp.getWriter().write("aa=" + aa + "bb=" + bb);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType("text/html; charset=utf8");
        String aa = req.getParameter("aa");
        String bb = req.getParameter("bb");
        resp.getWriter().write("aa=" + aa +"\n" +  "bb=" + bb);
    }
}
